30280855 has 12 divisors (see below), whose sum is σ = 39941496. Its totient is φ = 22022000.

The previous prime is 30280853. The next prime is 30280871. The reversal of 30280855 is 55808203.

It is not a de Polignac number, because 30280855 - 2¹ = 30280853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30280853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24421 + ... + 25630.

It is an arithmetic number, because the mean of its divisors is an integer number (3328458).

Almost surely, 2^30280855 is an apocalyptic number.

30280855 is a deficient number, since it is larger than the sum of its proper divisors (9660641).

30280855 is a wasteful number, since it uses less digits than its factorization.

30280855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50078 (or 50067 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 30280855 is about 5502.8042850896. The cubic root of 30280855 is about 311.6898867744.

The spelling of 30280855 in words is "thirty million, two hundred eighty thousand, eight hundred fifty-five".